The Viet Hoa market in Monona is well worth going to for any asian food item you may ever find yourself in need of. They have a large store with extensive selections of asian foods from every country in Asia.
The departments include: Fresh meat counter(mostly pork and chicken some lamb and beef) if your recipe calls for duck feet or chicken uteri, this is your store!, a small deli/prepared food case (fresh sandwiches and desert items), frozen fish dept. (many whole, with species I have never heard of), non-foods, imported asian consumables, and religious items, an extensive dried noodle aisle, canned foods also sauces & vinegars from all over, asian cooking utensils and pots galore, frozen foods, produce, and I have to mention the literal tons of sacks of every type of rice know to man, they even have red rice!
If you are in search of authentic asian greens of any kind look no further. They have many greens I have never heard of and have no idea how to use but this is not a problem, just ask one of the friendly staff. The owner is always there and he is all too happy to give advice on food preparation and uses of the unique produce you will find here. I must also add that on regular produce the prices are always much less than Woodmans or Copps but supply and occasionally quality can be lacking.
I always find myself buying much more than I had on my list, so bring some extra money and time--You'll need it!